Hurricane Julia (2010)

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For other storms of the same name, see List of storms named Julia.

Hurricane Julia
Cape Verde Islands
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Part of the 2010 Atlantic hurricane season

Hurricane Julia was the easternmost

extratropical transition
on September 20, and advisories on the storm were discontinued by that time.

As Julia never posed any significant threat to land, damage related to the storm was minimal. Trace amounts of rain reportedly fell across the Cape Verde islands, causing locally light flooding and minor inconveniences. Gusts battering the territory peaked at 30 mph (48 km/h), resulting in some wind damage to crops. In addition, these winds produced rough sea conditions, and high waves posed few threats along coastlines.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

The origins of Julia trace back to a vigorous

Atlantic along the western coast of Africa on September 11. At the time, the system maintained deep convection and strong easterly winds,[2] prompting the National Hurricane Center (NHC) to commence tracking the system as an area of interest.[3] As the wave moved generally westward at 10 to 15 mph (16 to 24 km/h), a quick increase in organization as well as a significant drop in surface pressure became notable.[4] The system continued to organize, and several hours later, the NHC noted only a slight increase would suffice for the development of a tropical cyclone.[5] By September 12, a tropical depression developed, and the NHC initiated advisories at 1500 UTC that day. At the time, the cyclone was situated 250 mi (400 km) southeast of the southernmost islands of Cape Verde.[6]

For several hours, steady strengthening continued as the depression maintained a westward track. Operationally, it was upgraded to Tropical Storm Julia early on September 13, though post-analysis confirmed the storm had reached winds of 40 mph (64 km/h) twelve hours after formation.

inHg), though operationally estimated at 135 mph (217 km/h) and 950 mbar (950 hPa; 28 inHg), respectively.[11]

Upon peaking in intensity, Julia accelerated slightly as it re-curved toward the northwest along a mid to upper-level low to its southwest. In addition, this system generated unfavorable southerly flow aloft, inducing a slight weakening of the storm. By early September 16, Julia's eye became indistinguishable on satellite images, and the storm further dropped to below major hurricane status. Upon doing so, Julia became embedded within a south-southeasterly steering current along deep-layer ridging in its vicinity, resulting in a more westward track.[2] Though still a hurricane, the relatively small tropical system moved to the east of the much larger Hurricane Igor. Concurrently, Igor's outflow began impinging on Julia's circulation, and due to colder sea surface temperatures, the storm weakened below hurricane intensity late on September 17. Henceforth, Julia re-accelerated as it further curved northward around the contiguous ridge,[2] nearly merging with Igor as a result. Progressively tracking to the north over the next hours, Julia subsequently executed a turn to the northeast, then to the east. Proceeding eastward, the low-level center of the storm became partially exposed on September 18; however, for several hours thereafter, convection gradually redeveloped over its center.[2] Despite the deep convection, vertical wind shear again increased over the system, causing the storm to enter an extratropical transition. It is estimated Julia degenerated into a post-tropical low by 1800 UTC on September 20, while located about 1,095 mi (1,762 km) west of the Azores.[12] The resultant storm meandered around over the Atlantic for several days, continuing generally eastward before executing an elongated loop to the south. Following this erratic track, the remnants of Hurricane Julia proceeded northwestward and came within 350 mi (560 km) of Bermuda, where they were once again briefly monitored by the NHC. However, chance of redevelopment dwindled, as conditions were not conducive for tropical formation;[13] convection nearly diminished entirely, and the NHC discontinued monitoring the system on September 28.[14]

Preparations and impact

Karl (left), Igor
(middle) and Julia (right) on September 16

Immediately upon developing into a tropical depression, Julia posed a threat to Cape Verde. At the time, at least 3 to 5 in (76 to 127 mm) of precipitation was expected, with locally accumulations of up to 8 inches (200 mm). In response, the Government of Cape Verde issued a tropical storm warning for the southern portion of the archipelago, which included Maio, Sao Tiago, Fogo, and Brava.[6] The tropical storm warning remained in effect after Julia intensified into a tropical storm; it was finally discontinued early on September 14.

Since Julia stayed at sea and never directly struck land as a significant cyclone, there were no reports of major damage or casualties. Across southern Cape Verde, intermittent rains and some gusty winds were reported when the storm neared the islands. Winds reached between 24 and 30 mph (39 and 48 km/h);

maiz crops.[18][19] In addition, rough seas with waves of 9.8 to 14.8 ft (3.0 to 4.5 m) resulted in minor disruptions along coastlines.[15]

See also

References

  1. ^ "Atlantic hurricane best track (HURDAT version 2)" (Database). United States National Hurricane Center. April 5, 2023. Retrieved April 18, 2024. Public Domain This article incorporates text from this source, which is in the public domain.
  2. ^ a b c d e f g Beven, Jack; Landsea, Christopher (December 9, 2010). "Hurricane Julia Tropical Cyclone Report" (PDF). National Hurricane Center. Retrieved 2010-10-16.
  3. ^ Blake, Eric; Brennan, Michael (September 11, 2010). "Tropical Weather Outlook". National Hurricane Center. Retrieved October 29, 2010.
  4. ^ Kimberlain, Todd; Beven, Jack (September 12, 2010). "Tropical Weather Outlook". National Hurricane Center. Retrieved October 29, 2010.
  5. ^ Kimberlain, Todd; Beven, Jack (September 12, 2010). "Special Tropical Weather Outlook". National Hurricane Center. Retrieved October 29, 2010.
  6. ^ a b Brennan, Michael (September 12, 2010). "Tropical Depression Advisory Number One". National Hurricane Center. Retrieved November 9, 2010.
  7. ^ Brown, Daniel (September 13, 2010). "Tropical Storm Julia Advisory Number Three". National Hurricane Center. Retrieved November 9, 2010.
  8. ^ Cangialosi, John (September 14, 2010). "Hurricane Julia Advisory Number Eight". National Hurricane Center. Retrieved November 9, 2010.
  9. ^ Berg, Robbie (September 15, 2010). "Hurricane Julia Advisory Number Eleven". National Hurricane Center. Retrieved November 9, 2010.
  10. ^ Cangialosi, John / Pasch, Richard (September 15, 2010). "Hurricane Julia Special Advisory Number Twelve". National Hurricane Center. Retrieved November 9, 2010.{{cite web}}: CS1 maint: multiple names: authors list (link)
  11. ^ a b Cangialosi, John (September 15, 2010). "Hurricane Julia Advisory Number Thirteen". National Hurricane Center. Retrieved November 9, 2010.
  12. ^ Franklin, James (September 20, 2010). "Tropical Storm Julia Advisory Number Thirty-four". National Hurricane Center. Retrieved November 10, 2010.
  13. ^ Pasch, Richard / Cangialosi, John (September 27, 2010). "Tropical Weather Outlook". National Hurricane Center. Retrieved November 10, 2010.{{cite web}}: CS1 maint: multiple names: authors list (link)
  14. ^ Blake, Erik (September 28, 2010). "Tropical Weather Outlook". National Hurricane Center. Retrieved November 10, 2010.
  15. ^ a b c Lusa (September 14, 2010). "Tempestade tropical Júlia afasta-se de Cabo Verde" (in Portuguese). Radiotelevisão Caboverdiana. Archived from the original on March 4, 2016. Retrieved September 19, 2010.
  16. ^ Resident of Sal; Cape Verde (September 12, 2010). "Weather History for Sal, Cape Verde: September 12, 2010". Weather Underground. Retrieved September 19, 2010.
  17. ^ Resident of Sal; Cape Verde (September 13, 2010). "Weather History for Sal, Cape Verde: September 13, 2010". Weather Underground. Retrieved September 19, 2010.
  18. ^ ACG (September 13, 2010). "Mau Tempo: estragos no interior de Santiago e no Fogo" (in Portuguese). Expresso das Ilhas. Archived from the original on October 23, 2010. Retrieved September 20, 2010.
  19. ^ Lusa (September 13, 2010). "Tempestade "Júlia" afasta-se gradualmente de Cabo Verde" (in Portuguese). iOnline. Archived from the original on March 5, 2016. Retrieved September 19, 2010.

External links

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